LibreOffice 6.1 comes with different user interface options and icon styles
LibreOffice 6.1 introduced some major and visible improvements which were long due. Among all, this version comes with options to choose cool icon styles and user interfaces.
The one I like best is Karasa Jaga.
See https://libreofficehelp.com/change-libreoffice-default-look-and-feel/
